Detailed Notes on Crystal
Detailed Notes on Crystal
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These crystals were being fashioned above a million a long time ago In the Earth's crust. They occur once the liquid from the Earth consolidates along with the temperature chills. Other crystals sort in the event the liquid would make its way with the clefts and dispense minerals to the clefts.
杂质、裂纹越少越好。质地好的水晶制品，应看不到星点状、云雾状和絮状分布的气液包裹体或组成玉石的颗粒。有裂纹、斑点，则属于次品。
A standard concept in crystal buildings is the unit mobile. It's the smallest device of volume that allows equivalent cells for being stacked together to fill all Area. By repeating the sample in the device cell repeatedly in all directions, your entire crystal lattice can be constructed. A cube is The only example of a device cell. Two other illustrations are revealed in Figure click here one. The first may be the device mobile for your deal with-centred cubic lattice, and the 2nd is for your body-centred cubic lattice. These constructions are stated in the subsequent paragraphs.
③次生包裹体：指主体水晶形成后，由于环境的变化使得主晶周围的一些物质沿裂隙进入到其内部而形成的包裹体。形成的原因有出熔作用、裂隙的结晶化、以及放射性元素破坏的作用等。水晶典型的次生包裹体有胶花水晶中的氧化铁充填物等。
条痕颜色：无色。矿物粉末的颜色叫条痕。它可以消除假色，减弱他色，保留自色，是比矿物的颜色更为可靠的鉴定特征之一。
Lattices could possibly have a single lattice place for every mobile or more than one, yielding a complete of fourteen Bravais crystal lattice kinds. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the a few-dimensional array produced by a list of discrete details.
水晶与高档宝石的净度要求有很大不同。高档宝石稀少罕见，所以一般人们普遍对高档宝石的净度不会过于苛求。而水晶的产量着实大得惊人，所以通常人们会要求水晶净度越高越好，尽量避免有较明显的内含物的水晶。
Hexagonal �?Characterised by four axes, a few of that are equal in duration and intersect at 120 levels, with a fourth axis perpendicular to the opposite a few.
24I need to make my meaning crystal clear.我想把我的意思解释得清清楚楚。《牛津词典》
[ C/U ] clear glass of top of the range, commonly with its area Slice into patterns that mirror gentle
用手去触摸水晶，天然水晶通常温度要比人造水晶的要凉的多；用眼观察，天然水晶通常有棉絮状的包裹体，这个是人造水晶所没有的。
You will discover other minerals and molecules that may form these crystal lattices. Snowflakes are a vintage illustration of a approximately symmetric and geometrically patterned structure from ice crystals, and gemstones of all types are typically crystals.
《古今小说·李公子救蛇获称心》：“器皿皆是玻璃、水晶、琥珀、玛瑙为之，曲尽巧妙，非人间所有。”
对于紫水晶黄水晶这样的单色水晶，通常要观察它的二色性，即使是最顶级的紫水晶黄水晶也是有色差的，通过这个方法可以鉴别是否加色。